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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Manager	Georg Pipps	USA	1 2 3 4 5
2	Accounting Manager	Jaime Yorres	England	1 2 3 4 5
3	Accountant	Howard Snyder	Argentina	1 2 3 4 5
4	Sales Representative	Elizabeth Lincoln	France	1 2 3 4 5
5	Sales Associate	Howard Snyder	Argentina	1 2 3 4 5
6	Sales Agent	Paul Henriot	Argentina	1 2 3 4 5
7	Owner	Matti Karttunen	Spain	1 2 3 4 5
8	Marketing Assistant	Howard Snyder	Argentina	1 2 3 4 5
9	Owner	Antonio Moreno	Brazil	1 2 3 4 5
10	Sales Representative	Matti Karttunen	USA	1 2 3 4 5
11	Sales Representative	Howard Snyder	Spain	1 2 3 4 5
12	Sales Manager	Jaime Yorres	Argentina	1 2 3 4 5
13	Sales Associate	Paul Henriot	France	1 2 3 4 5
14	Accountant	Pascale Cartrain	Argentina	1 2 3 4 5
15	Sales Representative	Jaime Yorres	Italy	1 2 3 4 5
16	Marketing Manager	Howard Snyder	Germany	1 2 3 4 5
17	Owner	Patricio Simpson	Germany	1 2 3 4 5
18	Marketing Assistant	Georg Pipps	Italy	1 2 3 4 5
19	Marketing Assistant	Georg Pipps	Austria	1 2 3 4 5
20	Sales Agent	Antonio Moreno	England	1 2 3 4 5
21	Marketing Assistant	Georg Pipps	England	1 2 3 4 5
22	Sales Associate	Howard Snyder	Spain	1 2 3 4 5
23	Sales Manager	Hanna Moos	Austria	1 2 3 4 5
24	Accountant	Jaime Yorres	France	1 2 3 4 5
25	Sales Manager	Jaime Yorres	Germany	1 2 3 4 5
26	Accountant	Georg Pipps	Spain	1 2 3 4 5
27	Sales Agent	Antonio Moreno	Germany	1 2 3 4 5
28	Owner	Paul Henriot	Austria	1 2 3 4 5
29	Accountant	Patricio Simpson	Argentina	1 2 3 4 5
30	Sales Agent	Hanna Moos	Germany	1 2 3 4 5
31	Sales Associate	Paul Henriot	Bulgaria	1 2 3 4 5
32	Sales Associate	Pascale Cartrain	Argentina	1 2 3 4 5
33	Accounting Manager	Georg Pipps	Brazil	1 2 3 4 5
34	Sales Associate	Paul Henriot	France	1 2 3 4 5
35	Sales Associate	Hanna Moos	Spain	1 2 3 4 5
36	Accounting Manager	Jaime Yorres	USA	1 2 3 4 5
37	Marketing Manager	Antonio Moreno	France	1 2 3 4 5
38	Marketing Assistant	Howard Snyder	Spain	1 2 3 4 5
39	Owner	Antonio Moreno	Germany	1 2 3 4 5
40	Sales Manager	Elizabeth Lincoln	England	1 2 3 4 5
41	Owner	Jaime Yorres	Austria	1 2 3 4 5
42	Sales Representative	Georg Pipps	USA	1 2 3 4 5
43	Sales Representative	Pascale Cartrain	Spain	1 2 3 4 5
44	Sales Representative	Pascale Cartrain	Brazil	1 2 3 4 5
45	Sales Representative	Antonio Moreno	USA	1 2 3 4 5
46	Sales Consultant	Antonio Moreno	USA	1 2 3 4 5
47	Sales Associate	Antonio Moreno	Brazil	1 2 3 4 5
48	Sales Associate	Georg Pipps	Austria	1 2 3 4 5
49	Sales Representative	Matti Karttunen	Germany	1 2 3 4 5
50	Marketing Assistant	Pascale Cartrain	Bulgaria	1 2 3 4 5
51	Owner	Hanna Moos	Spain	1 2 3 4 5
52	Sales Manager	Paul Henriot	USA	1 2 3 4 5
53	Sales Associate	Patricio Simpson	Brazil	1 2 3 4 5
54	Accountant	Matti Karttunen	England	1 2 3 4 5
55	Sales Representative	Patricio Simpson	Italy	1 2 3 4 5
56	Accountant	Patricio Simpson	France	1 2 3 4 5
57	Sales Representative	Matti Karttunen	Italy	1 2 3 4 5
58	Marketing Manager	Matti Karttunen	Spain	1 2 3 4 5
59	Sales Consultant	Howard Snyder	USA	1 2 3 4 5
60	Accounting Manager	Howard Snyder	Italy	1 2 3 4 5
61	Accountant	Matti Karttunen	Italy	1 2 3 4 5
62	Marketing Manager	Patricio Simpson	Bulgaria	1 2 3 4 5
63	Accounting Manager	Hanna Moos	France	1 2 3 4 5
64	Sales Associate	Hanna Moos	Bulgaria	1 2 3 4 5
65	Owner	Georg Pipps	Brazil	1 2 3 4 5
66	Sales Agent	Pascale Cartrain	England	1 2 3 4 5
67	Accounting Manager	Paul Henriot	Argentina	1 2 3 4 5
68	Sales Manager	Hanna Moos	Brazil	1 2 3 4 5
69	Sales Consultant	Patricio Simpson	Germany	1 2 3 4 5
70	Sales Representative	Hanna Moos	Brazil	1 2 3 4 5
71	Sales Agent	Patricio Simpson	Brazil	1 2 3 4 5
72	Sales Agent	Elizabeth Lincoln	Spain	1 2 3 4 5
73	Accountant	Pascale Cartrain	USA	1 2 3 4 5
74	Accounting Manager	Pascale Cartrain	Germany	1 2 3 4 5
75	Sales Associate	Jaime Yorres	Spain	1 2 3 4 5
76	Marketing Assistant	Elizabeth Lincoln	USA	1 2 3 4 5
77	Accounting Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
78	Sales Manager	Georg Pipps	USA	1 2 3 4 5
79	Sales Associate	Matti Karttunen	France	1 2 3 4 5
80	Marketing Manager	Matti Karttunen	Brazil	1 2 3 4 5
81	Marketing Manager	Georg Pipps	Germany	1 2 3 4 5
82	Sales Representative	Georg Pipps	Italy	1 2 3 4 5
83	Accountant	Elizabeth Lincoln	Germany	1 2 3 4 5
84	Sales Representative	Hanna Moos	Argentina	1 2 3 4 5
85	Marketing Manager	Pascale Cartrain	Spain	1 2 3 4 5
86	Sales Manager	Jaime Yorres	Spain	1 2 3 4 5
87	Owner	Howard Snyder	Italy	1 2 3 4 5
88	Sales Manager	Patricio Simpson	Brazil	1 2 3 4 5
89	Marketing Manager	Georg Pipps	Austria	1 2 3 4 5
90	Sales Associate	Jaime Yorres	Austria	1 2 3 4 5
91	Accountant	Paul Henriot	Brazil	1 2 3 4 5
92	Sales Manager	Antonio Moreno	France	1 2 3 4 5
93	Sales Associate	Patricio Simpson	Bulgaria	1 2 3 4 5
94	Marketing Assistant	Patricio Simpson	England	1 2 3 4 5
95	Sales Associate	Pascale Cartrain	Spain	1 2 3 4 5
96	Sales Agent	Howard Snyder	England	1 2 3 4 5
97	Marketing Manager	Howard Snyder	Bulgaria	1 2 3 4 5
98	Sales Representative	Paul Henriot	Argentina	1 2 3 4 5
99	Accountant	Pascale Cartrain	Argentina	1 2 3 4 5
100	Sales Agent	Jaime Yorres	Austria	1 2 3 4 5


...101 102 103 104 105 106 107 108 109 110 ... Item 107001 to 108000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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